Va. Code § 18.2-120
If any person shall solicit, urge, encourage, exhort, instigate or procure another or others to go upon or remain upon the lands, buildings, or premises of another, or any part, portion or area thereof, knowing such other person or persons to have been forbidden, either orally or in writing, to do so by the owner, lessee, custodian or other person lawfully in charge thereof, or knowing such other person or persons to have been forbidden to do so by a sign or signs posted on such lands, buildings, premises or part, portion or area thereof at a place or places where it or they may reasonably be seen; or if any person shall, on such lands, buildings, premises or part, portion or area thereof prevent or seek to prevent the owner, lessee, custodian, person in charge or any of his employees from rendering service to any person or persons not so forbidden, he shall be guilty of a Class 1 misdemeanor.
Va. Code § 18.2-120